Sylvania



E. U. AMES.

YARN PUSHER FOR KNITTING MACHINES.

APPLICATION FILED AUG-26. 1916.

1,335,633. Pateiited Mar. 30,1920.

- 2 SHEETSSHEET 1- 2 SHEETSSHEET 2.

Patefited Mar. 30,1920;

E. U. AMES.

YARN PUSHER FOR. KNITTING MACHINES.

APPLICATION EILEQ AUGZGI 1916.

.Zmzfor EZI UVZW,

UNITED STATES PATENT oFnrc ELMEB '0'. AMES, OF PHILADEIlPHIA, PENNSYLVANIA, ASSIGNOR- T H. BRINTON COMPANY, OF PHILADELPHIA,PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA- YABN-PUSHEB FOR KNITTING-MACHINES.

To all whom it may concern:

Be it known that I, ELMER AMEB, a

citizen of the United States, residing in Specification of Letters Patent. Patented Mar. 30, 1920. Application 6106 August 26, 1916. Serial No. 117,097.

the present case they are vertical planes. Said guides are actuated by a series of slides 52, 53, 54 and 55 which movable in parallel v Philadelphia, Penns lvania, have invented are movable in the throat toward and from 55 Yarn-Pushers for knitting-Machines, of the needle cylinder and each of them is which the following is a specification. acted on by a spring 56 so that it tends to- One object of my invention is-to provide move away from the cylinder, thereby drawnovel means for insuring the engagement of ing the yarn serving end of its finger into its the yarn by a predetermined needle when lower or operative position. 60

the machine is started after the transfer operation, which means, in addition to being simple in construction and certain in its operation, shall have no injurious or objectionable effects upon. the needles or upon other part of the apparatus.

I further desire to provide a compact and substantial. device for automatically pushing the yarn toward the needle cylinder of r a knitting machine at a predetermined time in the cycle of operation of the latter in order to insure the engagement of said yarn by a definite one of the needles when such engagement would otherwise be uncertain.

These objects and other advantageous ends I secure as hereinafter set forth, reference being had to the accompanying drawings, in which,

Fi ure 1 is a side elevation of a part of a knitting machine embodying my invention; I

FFig. 2 is a plan of the machine shown in Fig. 3 is a fragmentary plan of a part of the latch ring illustrating the operation of my invention;

Fig. 4 is a fragmentary elevation showing on a reduced scale certain of the parts illustrated in Fig. 2; I

Fig. 5 is a perspective view of my .yarn pusher; and

Figs. 6, 7 and 8 are side elevations, partly in section, illustrating the operation of the pusher.

As is customary in machines of the type illustrated, as well as in machines of a kindred type in which the cam ring is rotated and the needle cylinder is stationary, there is provided above the needlecylinder a latch ring 46 having a throat portion 47 in which the yarn serving fingers or guides 48, 49, 50 and 51 are mounted so that in [provide a cam slides are actuated from a cam drum 30 through cam levers 57 58, 59 and 60, arranged as 'described and claimed in my pending application for a Patent #7,111, filed February 9, 1915, and in the present case in addition to the'above described parts, I

lever 61 actuated by a suitably placed cam 62 on the drum'30. Said lever acts on a slide. 63 movable between the slides 52 and 53 and like the latter, at all times tends to move away from the needle cylinder under the action of a spring 56 operative between a part of the latch ring structure and a post 64.

This slide 63 has projecting forwardly from its front edge a pusher in the'form of a finger (Fig. 5) whose forward end, in addition to having its top edge forwardly beveled, has at one side a notch 66 formed by making an inclined vertical cut from the center of its front end to one side, the cut extending at an angle of about 30 to said side. It is noted that this'cut does not extend completely through the finger but ap-. proaches the bottom thereof sufiiciently to form a relatively narrow lip 67 whose lower edge is designed to slide in engagement with the upwardly curved surface of the front portion 68 of the bottom of the latch ring mounted in the side walls of the throat. As when the slide its pusher bottom 68 of a result of this construction, 63 is moved forward and strikes the upwardly curved acting through t eir various cam levers and slides 52, 53, 54 and 55. The succeeding revolution. of the needle cylinder thereupon runs the stitches off the needls and suitable mechanism forming no part of thefpresent invention moves the belt shifter 6 and chinfggs the belt to theloose pulley.

r the usual transfer operation the latch ring is dropped and the belt shifter is g is lowered. After such engagement has ocmoved to cause t e machine to be driven by ower. At this time the right hand arn nger 51 is lowered by its suitably pliiced cam on the drum acting. through the cam lever 60 and the slide 55, and the yarn so served is engaged by the short butt needles, from which it asses into the throat ofthe latch ring to said fin r. The upper-center cam 35 is now mov inwardly farenou' h to engage the butts of the long butt need es s6 that these will be successively lowered, but the enga ement of the yarn-by the first of these needles is bynome'ans-'ertain because of the angle at which it extends from the short butt needles. According to m invention however, the yarnpusherqsli. e 63- with the pusher 65 now moves toward the n'eedles. under the action of the cam 62 and the cam lever. 61, causing the lip 67 of said pusher to engage the yarn as it leads from the-finger 51 over the throat plate '68 and positively move it under the hook of the first of the long butt needles, thus absolutely insuring its engagement thereby as said needle curred, the cam on the drum 30, which has actuatedthe pusher slide withthe' pusher,

allows the latter to drop back to the normal position shown in Fig.

The machine thereafter continues'its o oration in the ordinary manner until t e stocking is finished.

From the above description and illustrations it will be understood that the pusher acts on that part of the yarnwhich runs from one of the short butt needles tangent to the circular series of needles, and bends it in toward the latter so that the first of the long butt needles will certainly engage it. In so doing the thin lip of the pusher moves toward the needle cylinder in contact with the upwardly inclined throat plate, thereby efi'ectually preventing the possibility of the yarn slipping under it since said yarn extends in a line at an an le with the inclined bottom of said plate an is elevated above it. Said arm is thus held in its inwardly deflected position until it has been engaged by the proper needle.

claim 1. The combination in a knitting machine of a circular series of needles; and means movable to av point inside of the circle defined by the outer parts of the hooks of said needles for projectlng theyarn into position to be ositively engaged by said hooks.

v 2. he combination in'a knitting machine of a circular series of needles; a latch ring; means for serving yarn to the needles; and means movable under the books of said needles for insuring engagement of, the yarn therelIJy 3. he combination in a knitting machine of a circular series of needles; with a yarn pusher movable toward and from said needles and-consisting of, a bar .having a s ingle'yarn' engaging lip presenting a relatively sharp edge. extending up and back from the bottomof its forward end in position-to pass under and deliver the yarn to the hooks of the needles.

' 4. The combination in a knitti machine of a circular series of needles; a atch ring having a throat including a bottom ortion; means for gpiding yarn across said bottom portion to t a li presenting a relatively sharp edge at the ottom of its forward end and operative overthe-bottom portion of the throat toward e needles; and a pusher having and'from the needle for positively forcing yarn engaging lip operative over said bottom" portion so as to be directed by the inclined part thereof under the yarn; with means for moving said pusher toward and from the needles; the same including a reciprocable slide; and cam mechanism for operating said slide.

7.,The combination in a knitting machine of a circular series of needles; a latch ring having a throat including an upwardly inclined bottom portion: a pusher having a yarn engaging lip operative over said bottom portion; means for moving said pusher toward and from the needles; the same including a slide operative in the throat of the latch ring and having slots enlarged at their rear ends; retaining pins extending across the throat of the latch ring and passing through said slots; with means for moving the slide and the pusher toward the needles while permitting the front end of said slide with the pusher to move upwardly as the latter passes over the inclined bottom portion of the throat.

8. The combination in a knitting machine of a circular series of needles; a guide for serving yarn to said needles; a latch ring having a throat formed to hold the yarn in an elevated position; a yarn pusher operative in the throat and having a portion movable under the elevated part of the yarn; with means for moving the yarn pusher toward and from the needles.

9. The combination in a knitting machine of a circular series of needles; with a yarn pusher movable toward and from said needles and consisting of a bar having one side and the upper corner of its end cut away to provide a relatively thin, substantially horizontal yarn engaging lip; with means for actuating said bar.

10. The combination in a knitting machine of a circular series of needles; a guide for serving yarn to said needles; a latch ring having a curved, inclined bottom formed to hold the yarn elevated as it passes from said yarn guide; a yarn pusher having a, portion movable under the elevated portion of the yarn; and means for actuating said pusher to move it toward and from the needles.

11. The combination in a knitting machine of a circular series of needles; a guide for serving yarn to said needles; a latch ring having a throat formed with an upwardly inclined bottom having a portion spaced away from the yarn as it passes from said guide; with a yarn pusher having a relatively thin, substantially horizontal lip movable between the yarn and the inclined portion of the bottom of the throat; and means for moving said yarn pusher toward and from the needles.

ELMER U. AMES. 

